着重阐述了设计原理、关键元器件和关键技术。
It emphasizes the design theory, key component and key technique.
随着配电自动化水平的提高，FTU已经成为配电自动化系统中的关键元器件。
Along with raising the level of distribution automation system, FTU has become the key to distribution automation system components.
在第三章中对光网络常用的关键元器件产品性能参数，尤其是可靠性参数进行了评估。
In the third chapter, performance parameters of key components in optical networks, especially their reliability properties, are evaluated and analyzed.
HW系列热熔对接焊机适用于PE等塑料管材的热熔对接。关键元器件选用国内外优质产品。
The HW Series are used for sweating soldering of PE tubes. All the key components are quality products sourced domestically and abroad.
军用密封电磁继电器是广泛应用于运载火箭、导弹、卫星等武器装备系统与航天系统中的关键元器件，工作环境的复杂性要求其必须具备良好的耐力学性能。
In this paper a finite element model of hermetically sealed electromagnetic relay is built, through normal modes analysis and frequency response analysis, the vibration transitive path is studied.
各家公司都使出浑身解数确保关键电子元器件的供给。
Companies have maneuvered to try to make sure they get access to key components.
积极扩大进口，重点增加先进技术装备、重要原材料和关键零部件及元器件的进口。
We will energetically increase imports with the focus on advanced technology and equipment important raw materials and key spare parts and components.
印制电路板(PCB)是集成各种电子元器件的信息载体，是电子产品的关键部件。
Printed Circuit Board (PCB) is information carriers integrating various electronic components. It is also the key unit of electronic products.
元器件贴装顺序是影响贴片机工作效率的关键因素之一。
Component mounting sequence is critical to the efficiency of surface mounting machines.
这促使电子元器件的功率密度急剧升高，能否进行有效地散热已经成为亟待解决的关键问题。
This makes the power density of electronic components increase sharply, and whether it can be effectively cooled has become a key problem to be solved.
由于磁刺激器是高电压、大电流的装置，本文对元器件的选择、设计中的注意事项等关键问题特别进行了阐述。
The paper expatiates key points such as elements choosing and notices in design in particular because magnetic stimulator is high voltage, large current device.
轭铁是控制元器件中较关键的零件，具有精度高、加工困难，对工人的操作技能有较高的要求，零件合格率低等特点。
Yoke steel is the key part in controller, the precision is high, manufacture is difficult, has high request to the worker's operation skill, the component qualified rate is low.
元器件的使用可靠性是整机可靠性的关键和基础。
TThe operational reliability of electronic components is the key and basis for the reliability of the entire equipment.
元器件的使用可靠性是整机可靠性的关键和基础。
TThe operational reliability of electronic components is the key and basis for the reliability of the entire equipment.
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